S-93279A160 21.2 mm ID x 33.6 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Exceptional vibration resistance due to the split lock design, preventing fastener loosening in high-stress environments.
• Durable blue-dyed steel construction offers enhanced corrosion identification and reliable performance under demanding conditions.
• High Rockwell C44 hardness ensures the washer maintains its shape and locking force, providing long-term reliability.
• Precise metric sizing (21.2mm ID, 33.6mm OD) guarantees a perfect fit for M20 screws, simplifying installation and improving assembly accuracy.
• Compliance with DIN 127B standard assures consistent quality, interchangeability, and adherence to recognized engineering specifications.
• RoHS 3 compliant material makes this washer safe for use in environmentally sensitive applications and global markets.
• Versatile industrial application suitable for machinery, automotive, and construction assemblies where secure fastening is critical.

Professional Applications & Engineering Value

This M20 split lock washer is engineered from blue-dyed steel to address common industrial challenges such as vibration-induced loosening and material fatigue. The split lock design creates a spring-like action that maintains constant pressure on the fastener, effectively resisting rotational forces in dynamic environments like heavy machinery, automotive systems, and structural frameworks. Its Rockwell C44 hardness ensures the washer does not deform under load, preserving clamping force over time. The metric dimensions and adherence to DIN 127B provide reliable performance in European and international projects, while the blue dye aids in quick visual inspection and inventory management. Ideal for industrial applications requiring secure, long-lasting fastening solutions, this washer enhances assembly integrity and reduces maintenance needs.

Specification Summary & Compliance

This washer features precise dimensions with an Inner Diameter of 21.2 mm, Outer Diameter of 33.6 mm, and Thickness of 3.8-4.2 mm, designed for M20 screw sizes in the metric system of measurement. It conforms to the DIN 127B standard for split lock washers, ensuring dimensional accuracy and performance reliability. The product is manufactured from blue-dyed steel with a hardness of Rockwell C44 and is fully RoHS 3 (2015/863/EU) compliant, meeting environmental and safety regulations for hazardous substance restrictions.